[7][8] Filip made his league debut for the club on 2 July 2023, in a 0–1 loss against SHB Đà Nẵng at Hòa Xuân Stadium.

In July 2019, it was reported that Filip was in the process of becoming naturalized as a Vietnamese citizen, which would allow him to represent the country's national team for the succeeding 2022 FIFA World Cup qualifiers.

[14] Due to positive SARS-CoV-2 tests in the previous Czech squad, all players and the coaching staff which faced Slovakia on 4 September had to be replaced.

[15][16][17] On 6 December 2023, Filip announced on his Facebook page that he had successfully completed his Vietnamese naturalization, thus making him eligible to play for Vietnam.

[19][20] He made his first senior international appearance against Kyrgyzstan in a 1–2 friendly defeat on 9 January 2024 in preparation for the tournament.